Thanks for the replies....I think my biggest roo is trying to compete with the 17lb heavyweight as he still has growing to do yet. (Or maybe he is just a big fat slob!)
I noticed a short while ago that my Blue Partridge Brahma cockerel has green eyes. Doesn't show very well in the pic. but they are a lovely piercing green. I then traced the green eyes to his dad Whitey who has them too. Something to do with the 'blue' gene...I don't know, but interesting.